Aurora Borealis in Pori
Finland · 61.48°, 21.78° · geomagnetic 59.4° · needs Kp 5
Tonight's aurora forecast for Pori
48%
Peak chance of a visible display tonight, from the same model the Revon app runs. Pori needs Kp 5 to see anything at all, and tonight the forecast peaks at Kp 4.7. Short of the threshold, which is what most nights look like here.
Get the full 30-night forecast in Revon
Updated 2026-09-08 10:35 UTC
Local aurora guide for Pori
Pori is located at 59.4° geomagnetic latitude. Auroras are typically visible when the planetary Kp index reaches 5.
On average, there are 20.0 nights per year in Pori where conditions are suitable for aurora viewing.
Historical data for aurora sightings in this region spans from April 2, 2016, to March 30, 2026.
The best months for aurora viewing in Pori are September, March, and October.
During May, June, July, and August, there is no full darkness, which can impact viewing conditions.
Pori experiences a Bortle 6 sky brightness. Areas with Bortle 4 sky brightness are located 12 km east near Ulvila.
The horizon is relatively open in several directions, with notable features including the island of Hanhiluoto to the north-north-west, and the hill Isonkuusenmäki to the north.
Geographic features near Pori that may offer viewing opportunities include Hanhiluoto, an island located 3.5 km north-north-west of the city.
Other locations include the hill Isonkuusenmäki, 3.7 km north, and Luodonmäki, a hill 3.9 km north.
Further afield, Välisanta island is situated 6.4 km north-north-west, and the lake Rottajärvi is 8.4 km north-east.
There have been 40 verified aurora reports within 300 km of Pori between January 1, 2015, and December 31, 2016.
The region has experienced approximately 20.0 viable aurora nights per year, based on historical data.
Notable qualifying nights in the recent record span include March 20-24, 2026, with Kp values ranging from 5.0 to 7.0.
Sources: Revon location dataset · Revon analysis of NOAA planetary Kp · Solar declination and hour-angle calculation · Falchi 2016 World Atlas of artificial night sky brightness · GeoNames (CC BY 4.0) · Aurorasaurus verified positive reports
Know when it is worth going outside
Revon watches the Pori forecast and pushes an alert when the odds for tonight clear your threshold — no checking, no guessing.
Nearby towns
Forecasts for places within reach of Pori.